g steering

PS-1

POWER STEERING SYSTEM

G STEERING

CONTENTS

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SECTION

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Revision: May 2006 2007 Maxima

PRECAUTIONS .......................................................... 2Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TEN-SIONER” .................................................................. 2Precautions for Steering System .............................. 2

PREPARATION ........................................................... 3Special Service Tools ............................................... 3Commercial Service Tool ......................................... 4

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING ................................................ 5

NVH Troubleshooting Chart ..................................... 5POWER STEERING FLUID ........................................ 6

Checking Fluid Level ................................................ 6Checking Fluid Leakage ........................................... 6Bleeding Hydraulic System ...................................... 7

STEERING WHEEL .................................................... 8On-Vehicle service ................................................... 8

CHECKING STEERING WHEEL PLAY ................ 8CHECKING NEUTRAL POSITION ON STEER-ING WHEEL .......................................................... 8CHECKING STEERING WHEEL TURNING FORCE .................................................................. 8FRONT WHEEL TURNING ANGLE ..................... 9

Removal and Installation .......................................... 9REMOVAL ............................................................. 9INSTALLATION ..................................................... 9

HEATED STEERING WHEEL .................................. 10Component Parts and Harness Connector Location ... 10System Description ................................................ 10Wiring Diagram — H/STRG — ................................11

TILT & TELESCOPIC SYSTEM ................................ 12Removal and Installation ........................................ 12

TILT MOTOR AND TILT SENSOR ...................... 12TELESCOPIC MOTOR AND TELESCOPIC SENSOR ............................................................. 13

STEERING COLUMN ............................................... 14Removal and installation ........................................ 14

REMOVAL ........................................................... 15INSTALLATION ................................................... 15

Disassembly and Assembly .................................... 16DISASSEMBLY ................................................... 16ASSEMBLY ......................................................... 17

Inspection ............................................................... 17POWER STEERING GEAR AND LINKAGE ............ 18

On-Vehicle Service ................................................. 18CHECKING STEERING GEAR ........................... 18CHECKING STEERING LINKAGE ..................... 18CHECKING GEAR HOUSING MOVEMENT ....... 18CHECKING RACK SLIDING FORCE .................. 18

Removal and Installation ........................................ 19REMOVAL ........................................................... 19INSTALLATION ................................................... 20

Disassembly and Assembly .................................... 21DISASSEMBLY ................................................... 21INSPECTION AFTER DISASSEMBLY ................ 22ASSEMBLY ......................................................... 22

Adjustment for Rack Sliding Force ......................... 23DECREASE ......................................................... 23INCREASE .......................................................... 24

POWER STEERING OIL PUMP ............................... 25On-Vehicle Service ................................................. 25

CHECKING HYDRAULIC SYSTEM .................... 25Removal and Installation ........................................ 25

REMOVAL ........................................................... 25INSTALLATION ................................................... 25

Disassembly and Assembly .................................... 26PRE-DISASSEMBLY INSPECTION .................... 26DISASSEMBLY ................................................... 27ASSEMBLY ......................................................... 27

Inspection After Disassembly ................................. 29HYDRAULIC LINE .................................................... 30

Removal and Installation ........................................ 30SERVICE DATA AND SPECIFICATIONS (SDS) ...... 31

General Specifications ............................................ 31Steering Wheel ....................................................... 31Steering Column ..................................................... 31Steering Gear and Linkage ..................................... 32Power Steering ....................................................... 33

PS-2

PRECAUTIONS


PRECAUTIONS PFP:00001

Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEAT BELT PRE-TENSIONER” EGS000VH

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used alongwith a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certaintypes of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRSsystem uses the seat belt switches to determine the front air bag deployment, and may only deploy one frontair bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.Information necessary to service the system safely is included in the SRS and SB section of this Service Man-ual.WARNING:� To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death

in the event of a collision which would result in air bag inflation, all maintenance must be per-formed by an authorized NISSAN/INFINITI dealer.

� Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and AirBag Module, see the SRS section.

� Do not use electrical test equipment on any circuit related to the SRS unless instructed to in thisService Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses orharness connectors.

Precautions for Steering System EGS000VI

� Before disassembly, thoroughly clean the outside of the unit.� Disassembly should be done in a clean work area. It is important to prevent the internal parts from

becoming contaminated by dirt or other foreign matter.� For easier and proper assembly, place disassembled parts in order on a parts rack.� Use nylon cloths or paper towels to clean the parts; common shop rags can leave lint that might

interfere with their operation.� Before inspection or reassembly, carefully clean all parts with a general purpose, non-flammable

solvent.� Before assembly, apply a coat of recommended Genuine NISSAN PSF or equivalent to hydraulic

parts. Petroleum jelly may be applied to O-rings and seals. Do not use any grease.� Replace all gaskets, seals and O-rings. Avoid damaging O-rings, seals and gaskets during installa-

tion. Perform functional tests whenever designated.

PREPARATION

PS-3

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PREPARATION PFP:00002

Special Service Tools EGS0011Z

The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here.

Tool number(Kent-Moore No.)Tool name

Description

KV48102500(J-33914)Pressure gauge adapter

Measuring oil pressure

ST27180001(J-25726-A)Steering wheel puller

Removing steering wheel

HT72520000(J-25730-A) Ball joint remover

Removing ball joint

KV48103500(J-26357 and J-26357-10)Pressure gauge

Measuring oil pressure

KV40107300( — )Boot clamp crimping tool

Installing boot clamps

ST3127S0001 GG91030000(See J-25765-A)Torque wrench2 HT62940000( — )Socket adapter3 HT62900000( — )Socket adapter

Measuring rotating torque

S-NT542

S-NT544

NT146

S-NT547

ZZA1229D

S-NT541

PS-4

PREPARATION


Commercial Service Tool EGS00120

Tool number Description

Oil pump attachment Disassembling and assembling oil pumpUnit: mm (in)

Spring gauge Measuring steering wheel turning force or rack sliding force

Power tool Loosening bolts and nuts

S-NT774

LST025

PBIC0190E

NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING

PS-5

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NOISE, VIBRATION, AND HARSHNESS (NVH) TROUBLESHOOTING PFP:00003

NVH Troubleshooting Chart EGS000VL

Use the chart below to help you find the cause of the symptom. If necessary, repair or replace these parts.

×: Applicable

Reference pageP

S-6

PS

-6

FS

U-5

FS

U-5

FS

U-5

PS

-6

PS

-8

PS

-23

MA

-11

PS

-8

PS

-17

PS

-18

PS

-17

PS

-17

PS

-18

FAX

-4, "

NV

H T

roub

lesh

ootin

g C

hart

"

FAX

-4, "

NV

H T

roub

lesh

ootin

g C

hart

"

FS

U-4

, "N

VH

Tro

uble

shoo

ting

Cha

rt"

WT-

4, "

NV

H T

roub

lesh

ootin

g C

hart

"

WT-

4, "

NV

H T

roub

lesh

ootin

g C

hart

"

BR

-5, "

NV

H T

roub

lesh

ootin

g C

hart

"

Possible cause andSUSPECTED PARTS

Flu

id le

vel

Air

in h

ydra

ulic

sys

tem

Tie

-rod

bal

l joi

nt s

win

ging

forc

e

Tie

-rod

bal

l joi

nt r

otat

ing

torq

ue

Tie

-rod

bal

l joi

nt e

nd p

lay

Ste

erin

g ge

ar fl

uid

leak

age

Ste

erin

g w

heel

pla

y

Ste

erin

g ge

ar r

ack

slid

ing

forc

e

Driv

e be

lt lo

osen

ess

Impr

oper

ste

erin

g w

heel

Impr

oper

inst

alla

tion

or lo

osen

ess

or ti

lt lo

ck le

ver

Rub

ber

mou

nt d

eter

iora

tion

Ste

erin

g co

lum

n de

form

atio

n or

dam

age

Impr

oper

inst

alla

tion

or lo

osen

ess

of s

teer

ing

colu

mn

Ste

erin

g lin

kage

loos

enes

s

DR

IVE

SH

AF

T

AX

LE

SU

SP

EN

SIO

N

TIR

ES

RO

AD

WH

EE

L

BR

AK

ES

Symptom

Noise × × × × × × × × × × × × × × ×

Shake × × × × × × × × ×

Vibration × × × × × × × × ×

Shimmy × × × × × × × × × ×

Shudder × × × × × × ×

PS-6

POWER STEERING FLUID


POWER STEERING FLUID PFP:KLF20

Checking Fluid Level EGS000VM

Check fluid level, referring to the scale on reservoir tank, with theengine off.Use HOT range for fluid temperatures of 50° to 80°C (122° to176°F).Use COLD range for fluid temperatures of 0° to 30°C (32° to 86° F).CAUTION:� Do not overfill.� Recommended fluid is Genuine NISSAN PSF or equivalent

refer to MA-9, "RECOMMENDED FLUIDS AND LUBRI-CANTS" .

Checking Fluid Leakage EGS000VN

Check the lines for improper attachment and for leaks, cracks, damage, loose connections, chafing and dete-rioration.

1. Run engine between idle speed and 1,000 rpm.Make sure temperature of fluid in oil tank rises to 60° to 80°C (140° to 176°F).

2. Turn steering wheel right-to-left several times.3. Hold steering wheel at each lock position for five seconds and carefully check for fluid leakage.

CAUTION:Do not hold the steering wheel in a locked position for more than 15 seconds.

4. If fluid leakage at connectors is noticed, loosen flare nut and then retighten.CAUTION:Do not overtighten connector as this can damage O-ring, washer and connector.

5. If fluid leakage from power steering oil pump is noticed, check the power steering oil pump. Refer to PS-29, "Inspection After Disassembly" .

LGIA0021E

WGIA0039E

POWER STEERING FLUID

PS-7

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6. Check steering gear boots for accumulation of power steering fluid indicating a steering gear leak.

Bleeding Hydraulic System EGS000VO

1. Raise the front end of vehicle until the wheels are clear of the ground.2. Add Genuine NISSAN PSF or equivalent, refer to MA-9, "REC-

OMMENDED FLUIDS AND LUBRICANTS" , into the steeringfluid reservoir tank to the specified level. Then quickly turn thesteering wheel fully to right and left and lightly touch steeringstoppers. Repeat steering wheel operation until the fluid level nolonger decreases.

3. Start the engine then repeat step 2 above. Incomplete air bleeding will cause the following symptoms: � Air bubbles in reservoir tank� Clicking noise in oil pump� Excessive buzzing in oil pumpIf this happens, bleed out the air repeating step 2 above. Fluid noise may occur in the valve or oil pump.This is common when the vehicle is stationary or while turning the steering wheel slowly. This does notaffect the performance or durability of the system.

LGIA0021E

PS-8

STEERING WHEEL


STEERING WHEEL PFP:48430

On-Vehicle service EGS000VP

CHECKING STEERING WHEEL PLAY� With wheels in a straight-ahead position, check steering wheel

play.

� If it is not within specification, check the following for loosenessor worn components.

– Steering gear assembly– Steering column– Front suspension and axle– Check steering system for looseness while moving the steering

wheel in all directions.

CHECKING NEUTRAL POSITION ON STEERING WHEELPre-checking� Make sure that wheel alignment is correct. Refer to FSU-19, "Front Wheel Alignment (Unladen*1)" .� Verify that the steering gear is centered before removing the steering wheel.

Checking1. Check that the steering wheel is in neutral position when driving

straight ahead.2. If it is not in neutral position, remove the steering wheel and rein-

stall it correctly.3. If the neutral position is between two teeth, loosen tie-rod lock

nuts. Turn the tie-rods by the same amount in opposite direc-tions on both left and right sides.

CHECKING STEERING WHEEL TURNING FORCE1. Park vehicle on a level, dry surface and set parking brake.2. Start engine.3. Bring power steering fluid up to adequate operating temperature. Make sure the fluid temperature is

approximately 60° to 80°C (140° to 176°F).Tires need to be inflated to normal pressure.

4. Check steering wheel turning force using a commercialy avail-able spring gauge, when steering wheel has been turned 360°from the neutral position.

5. If steering wheel turning force is out of specification, check racksliding force. Refer to PS-18, "CHECKING RACK SLIDINGFORCE" .

6. If rack sliding force is not within specifications, adjust rack slid-ing force. Refer to PS-23, "Adjustment for Rack Sliding Force" .

7. If rack sliding force is OK, inspect steering column. Refer to PS-17, "Inspection" .

Steering wheel play : 35 mm (1.38 in) or less

Axial end play : 0 mm (0 in)

WGIA0034E

WGIA0036E

Steering wheel turning force

: 39 N (4 kg-f, 9 lb-f) or less

WGIA0035E

STEERING WHEEL

PS-9

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FRONT WHEEL TURNING ANGLE1. Rotate steering wheel all the way right and left; measure turning

angle. Refer to FSU-19, "General Specifications" .2. If it is not within specifications, check rack stroke. Refer to PS-

32, "Steering Gear and Linkage" .

Removal and Installation EGS000VQ

REMOVAL1. Set the front wheels in the straight-ahead position.2. Remove the driver air bag module. Refer to SRS-41, "Removal and Installation" .3. Remove the steering wheel center nut.4. Remove the steering wheel using Tool.

5. Place a piece of tape across the spiral cable so it will not berotated out of position.

INSTALLATION1. Installation is in the reverse order of removal.� Align spiral cable correctly when installing steering wheel. Make

sure that the spiral cable is in the neutral position. The neutralposition is detected by turning left 2.5 revolutions from the rightend position and ending with the knob at the top.

CAUTION:The spiral cable may snap due to steering operation if the cable is installed in an improper position.Also, with the steering linkage disconnected, the cable may snap by turning the steering wheelbeyond the limited number of turns. (The spiral cable can be turned up to 2.5 turns from the neutralposition to both the right and left.)

SMA127

Tool number: ST27180001 (J-25726-A)

WGIA0097E

WGIA0038E

Steering wheel center nut : 34 N·m (3.5 kg-m, 25 ft-lb)

PS-10

HEATED STEERING WHEEL


HEATED STEERING WHEEL PFP:48430

Component Parts and Harness Connector Location EGS0011V

System Description EGS0011W

NOTE:The heated steering system will operate ONLY when the steering wheel surface is below approximately 20° C(68° F). If the weather is warm enough, the heated steering system may not turn ON giving the appearancethat the system does not operate.Power is supplied at all times� through 10A fuse (No. 30, located in the fuse and fusible link box)� to heated steering relay terminals 1 and 3.With the ignition switch in the ON or START position, power is supplied� through 10A fuse [No. 12, located in the fuse block (J/B)]� to heated steering wheel switch terminal 1.Ground is supplied� to heated steering wheel switch terminal 6 and� to combination switch (heated steering) terminal 2� through grounds M57, M61 and M79.When the heated steering wheel switch is pressed, ground is supplied� to heated steering relay terminal 2� through heated steering wheel switch terminal 2� through heated steering wheel switch terminal 6� through grounds M57, M61 and M79.Then the heated steering relay is energized and power is supplied� from heated steering relay terminal 5� to combination switch (heated steering) terminal 1 and� to heated steering wheel switch terminal 5 (ON indicator).With power and ground supplied, the heated steering system will operate. The heated steering system will turnOFF when the steering wheel temperature reaches approximately 30° C (86° F).Heated steering system operation can also be cancelled by pressing the heated steering wheel switch.

1. A: Heated steering wheel switch M173B: Center console

2. Heated steering relay M13 3. Combination switch (heated steer-ing) M38

WIIA1235E

HEATED STEERING WHEEL

PS-11

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Wiring Diagram — H/STRG — EGS000VR

WGWA0006E

PS-12

TILT & TELESCOPIC SYSTEM


TILT & TELESCOPIC SYSTEM PFP:48805

Removal and Installation EGS000VS

TILT MOTOR AND TILT SENSORRemoval

1. Remove the instrument column cover and lower driver instrument panel. Refer to IP-10, "INSTRUMENTPANEL ASSEMBLY" .

2. Remove LH lower knee protector. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .3. Disconnect the tilt sensor electrical connector.4. Remove the two tilt sensor screws and the tilt sensor.5. Disconnect the tilt motor electrical connector.6. Remove the tilt motor bolt and the tilt motor.

InstallationInstallation is in reverse order of removal.NOTE:Make sure the tab in the tilt sensor is engaged with the bracket on the tilt motor.

WGIA0163E

1. Tilt sensor 2. Tilt motor

TILT & TELESCOPIC SYSTEM

PS-13

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TELESCOPIC MOTOR AND TELESCOPIC SENSORRemoval

1. Remove the instrument column cover and lower driver instrument panel. Refer to IP-10, "INSTRUMENTPANEL ASSEMBLY" .

2. Remove LH lower knee protector. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .3. Disconnect the telescopic sensor electrical connector.4. Remove the two telescopic sensor screws and the telescopic sensor.5. Disconnect the telescopic motor electrical connector.6. Remove the two telescopic motor bushing bracket screws.7. Remove the telescopic motor bolt and the telescopic motor.

InstallationInstallation is in reverse order of removal.NOTE:Make sure the tab in the telescopic sensor is engaged with the telescopic motor bushing bracket.

WGIA0164E

1. Telescopic motor 2. Telescopic sensor

PS-14

STEERING COLUMN


STEERING COLUMN PFP:48810

Removal and installation EGS000VT

1. Driver air bag module 2. Steering wheel 3. Head lamp switch

4. Spiral cable 5. Combination switch 6. ADP steering switch

7. Steering column (electric tilt/tele-scopic type)

8. Ignition switch 9. Steering column (manual tilt/tele-scope type)

WGIA0165E

STEERING COLUMN

PS-15

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REMOVALCAUTION:� The rotation of the spiral cable (SRS air bag component part) is limited. If the steering gear must

be removed, set the front wheels in the straight-ahead direction. Do not rotate the steering columnwhile the steering gear is removed.

� Remove the steering wheel before disconnecting the coupling joint to avoid damaging the spiralcable.

1. Disconnect battery negative terminal.2. If necessary, remove the steering wheel. Refer to PS-9, "Removal and Installation" .3. Remove both upper and lower steering column covers and lower driver instrument panel. Refer to IP-10,

"INSTRUMENT PANEL ASSEMBLY" .4. Remove the combination meter. Refer to DI-26, "Combination Meter" .5. Remove the cluster lid and center console assembly. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY"

and IP-17, "CENTER CONSOLE ASSEMBLY" .6. Remove the instrument panel screws from the LH side of the instrument panel to allow the ignition switch

to clear the instrument panel during removal. 7. Remove LH lower knee protector. Refer to IP-10, "INSTRUMENT PANEL ASSEMBLY" .8. Disconnect the following:

� Telescopic motor, if equipped� Telescopic sensor, if equipped� Tilt motor, if equipped� Tilt sensor, if equipped� Headlamp switch� Combination switch� Spiral cable� Key in reminder� Immobilizer� Illumination lamp� Ignition switch� Column harness clips, position aside

9. Remove the shaft lower cover.10. Remove the pinch bolt.11. Remove the steering column nuts and steering column.

INSTALLATIONInstallation is in the reverse order of removal.CAUTION:When installing the steering column, finger-tighten all of the lower bracket and joint retaining bolts;then tighten them to specification. Do not apply undue stress to the steering column.NOTE:Align slit of the coupling joint with projection on dust cover. Insert thejoint until surface A contacts surface B.� After installation, turn steering wheel to make sure it moves

smoothly. Ensure the number of turns are the same from thestraight-forward position to left and right locks. Be sure that thesteering wheel is in a neutral position when driving straightahead.

10. Upper joint 11. Hole cover 12. Lower Joint and shaft assembly

13. Shaft lower cover ⇐ Front

SST491C

PS-16

STEERING COLUMN


Disassembly and Assembly EGS000VU

DISASSEMBLY1. Remove the bolt from the upper joint, then remove the upper joint from the steering column assembly.2. Remove the ignition switch tamper resistant self-shear screws, using a drill.3. Disconnect key interlock cable then remove the ignition switch from the steering column.4. Remove spring, tilt lever, brackets and bushings as necessary.

1. Bracket 2. Upper joint 3. Ignition switch

4. Self-shear screw 5. Spring 6. Bushing

7. Tilt lever 8. Steering column assembly

LGIA0039E

STEERING COLUMN

PS-17

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ASSEMBLYAssembly is in the reverse order of disassembly.NOTE:Install new tamper resistant self-shear screws.

Inspection EGS000VV

� When the steering wheel does not turn smoothly, check the steering column as follows:1. Check the column bearings for damage or unevenness. Lubricate with recommended multi-purpose

grease. Replace the steering column as an assembly, if necessary.2. Check the column tube for deformation or breakage. Replace the steering column as an assembly, if nec-

essary.� If the vehicle has been involved in a collision, or if noise and rat-

tles are heard during a turn, check the length (L) of the column.If out of specification, replace the steering column as an assem-bly.

� Check for proper lubrication, apply grease as necessary.� Check for wear around the seal edges, replace as necessary.� Check for corrosion or pitting around the seal sliding area.� Replace the seal and shaft in case of seal edge wear or dam-

age.

� After installing the steering column, check the tilt mechanism forproper operation.

CAUTION:� Do not exert any load or impact in the axial direction imme-

diately before or after column removal.� After installation check for smooth steering wheel rotation,

without any catches or noise.� Replace the column if it is depleted of grease, worn, dam-

aged, or if any scratches or coating separation is presenton the shaft seal area.

� The nut on the upper joint may not be reused.� During lower joint detachment, insert a tool into the yoke groove to prevent gouging damage.� A washer must be used on all fastener bolts.

WGIA0009E

Steering column length (L) : 493 mm (19.4 in)

LGIA0020E

Manual tilt mechanism range (A)

: 3° per notch at 7 steps

WGIA0083E

PS-18

POWER STEERING GEAR AND LINKAGE


POWER STEERING GEAR AND LINKAGE PFP:49001

On-Vehicle Service EGS000VW

CHECKING STEERING GEAR� Check gear housing and boots for looseness and damage, and fluid leakage.� Check gear housing and boots for fluid leakage. Refer to PS-6, "Checking Fluid Leakage" .� Check connection with steering column for looseness.� Prior to removing the steering gear from the vehicle, check rack sliding force. Refer to PS-18, "CHECK-

ING RACK SLIDING FORCE" .� If rack sliding force is not within specification, adjust rack sliding force. Refer to PS-23, "Adjustment for

Rack Sliding Force" .

CHECKING STEERING LINKAGE� Check ball joint, and other component parts for looseness, wear, and damage.

CHECKING GEAR HOUSING MOVEMENT1. Check the movement of steering gear housing during stationary steering on a dry paved surface.

� Apply a force of 49 N (5 kg-f, 11 lb-f) to steering wheel to check the gear housing movement.Turn off ignition key while checking.

2. If movement exceeds the limit, replace or repair as necessary.

CHECKING RACK SLIDING FORCE1. Disconnect steering column lower joint and knuckle arms from the gear.2. Start and run engine at idle to make sure steering fluid has reached normal operating temperature.3. Pull tie-rod slowly, using a commercialy available spring gauge,

to move it from neutral position to ±11.5 mm (±0.453 in) at speedof 3.5 mm (0.138 in)/s. Check that rack sliding force is withinspecification.

4. Check sliding force outside the above range at rack speed 40mm (1.57 in)/s.

Movement of gear housing : ±2 mm (±0.08 in) or less

Average rack sliding force

: 235 - 314 N (24 - 32 kg-f, 55 - 71 lb-f)

Maximum force deviation : 98 N (10 kg-f, 22 lb-f)

Rack sliding forceMaximum : Not more than 294 N (30 kg-f,

66 lb-f)Maximum force deviation

: 147 N (15 kg-f, 33 lb-f)

SST090B


PS-19

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Removal and Installation EGS000VX

REMOVALCAUTION:� The rotation of the driver air bag spiral cable is limited. If the power steering gear must be

removed, set the front wheels in the straight-ahead direction. Do not rotate the steering columnwhile the steering gear is removed.

� Remove the steering wheel and spiral cable before removing the steering lower joint to avoid dam-aging the SRS spiral cable.

1. Remove the two front tires with power tool.2. Remove cotter pin and nut. Discard cotter pin.3. Disconnect the outer tie-rod ends using Tool.

4. Disconnect the outer stabilizer bar ends with power tool. Refer to FSU-12, "Removal and Installation" .5. Remove the stabilizer bracket rear bolts and loosen the front bolts with power tool.

1. Cotter pin 2. Castellated nut 3. Outer tie rod end

4. Gear housing bracket nut 5. RH gear housing bolt 6. Gear housing bracket bolt

7. Power steering gear and linkage assembly

8. LH gear housing mounting bolt ⇐ Front

WGIA0178E

Tool number : HT72520000 (J-25730-A)

WGIA0101E

PS-20



6. Remove the lower joint pinch bolt.

7. Disconnect the power steering high and low pressure lines from the power steering gear.8. Reposition the stabilizer bar up and out of the way.

9. Remove the two gear housing mounting bolts as shown.� Do not remove the gear housing mounting bracket from the

gear housing.NOTE:The front exhaust tube is removed for clarity.

10. Remove the power steering gear and linkage assembly.

INSTALLATIONInstallation is in the reverse order of removal.� Install high and low pressure pipe connections to power steering gear. Refer to PS-30, "Removal and

Installation" .CAUTION:� Use the specified tightening torque when installing the high-pressure and low-pressure pipe

connections. Excessive tightening will damage threads of connection or O-ring.� The O-ring in low-pressure pipe connector is larger than that in high-pressure connector. Take

care to install the proper O-ring.� Initially, tighten nut on tie-rod outer socket and knuckle arm to

specification. Then tighten further to align nut groove with firstpin hole so that the cotter pin can be installed.

CAUTION:Tightening torque must not exceed 49 N·m (5 kg-m, 36 ft-lb).

LGIA0002E

WGIA0160E

SST824A


PS-21

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Disassembly and Assembly EGS000VY

DISASSEMBLYCAUTION:� Use soft jaws when holding steering gear housing. Handle gear housing carefully, as it is made of

aluminum. Do not grip cylinder in a vise.� Do not disassemble steering gear.� Do not disassemble outer tie-rod.1. Remove the outer tie-rod sockets.2. Remove the inner tie-rod sockets and dust boots.3. Remove fluid tubes.

1. Steering gear 2. Gear housing fluid tube 3. Large boot band

4 Dust boot 5. Small boot clamp 6. Inner ball joint

7. Inner tie-rod socket 8. Outer tie-rod socket ⇐ Front

WGIA0161E

PS-22



INSPECTION AFTER DISASSEMBLYThoroughly clean all parts in cleaning solvent or Genuine NISSAN PSF or equivalent. Blow dry with com-pressed air.

Dust Boot� Check condition of boot. If cracked, replace it.� Check dust boots for accumulation of power steering fluid indicating power steering gear leak and replace

the power steering gear as necessary.

Power Steering Gear� Thoroughly examine steering gear. If damaged, cracked, leaking, or worn, replace it.

Inner and outer tie-rods� Check ball joints for swinging force:

Tie-rod outer and inner ball joints swinging force A. Refer to PS-32, "Steering Gear and Linkage" .

� Check ball joint for rotating torque:Tie-rod socket outer ball joint rotating torque B. Refer to PS-32,"Steering Gear and Linkage" .

� Check ball joints for axial end play:Tie-rod socket outer and inner ball joints axial end play C. Referto PS-32, "Steering Gear and Linkage" .

� Check condition of dust cover. If cracked, replace outer tie-rod.

ASSEMBLY1. Install the inner tie-rod sockets.2. Install the outer tie-rod sockets to the specified length L and

tighten the outer tie-rod socket lock nut to specification.NOTE:Use Genuine High Temperature, High Strength Thread LockingSealant (Red) or equivalent. Refer to GI-46, "RECOMMENDEDCHEMICAL PRODUCTS AND SEALANTS" .

3. Measure rack stroke. Refer to PS-32, "Steering Gear and Link-age" .

SST468C

SGIA0167E

SST086BA


PS-23

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4. Before installing boot, coat the contact surfaces between bootand tie-rod socket with grease.

5. Install the large boot clamp and crimp securely using Tool, theninstall the small boot clamp.

Adjustment for Rack Sliding Force EGS000VZ

DECREASEDecrease rack sliding force as follows:1. Loosen adjusting screw two rotations counterclockwise.

CAUTION:� Do not remove adjusting screw.� Steering gear must replaced if adjusting screw is removed or loosened more than two rotations.

2. Tighten adjusting screw in 40° - 60° increments until rack slidingforce is within specification. Refer to PS-32, "Steering Gear andLinkage" .NOTE:Steering gear must be replaced if adjusting screw rotationtorque is less than 5.0 N·m (0.9 kg-m, 44 in-lb).

3. Verify rack sliding force. Refer to PS-18, "CHECKING RACK SLIDING FORCE" .4. If rack sliding force is out of specification adjust rack sliding force again.

SST967A

Tool number : KV40107300 ( — )

AST139

LGIA0018E

PS-24



5. If rack sliding force can not be adjusted within specification replace steering gear. Refer to PS-19,"Removal and Installation" .

INCREASEIncrease rack sliding force as follows:1. Tighten adjusting screw until it is flush with housing surface.

CAUTION:� Do not remove adjusting screw.� Steering gear must replaced if adjusting screw is

removed or loosened more than two rotations.

2. Loosen adjusting screw in 40° - 60° increments until rack slidingforce is within specification. Refer to PS-32, "Steering Gear andLinkage" .NOTE:Steering gear must be replaced if adjusting screw rotationtorque is less than 5.0 N·m (0.9 kg-m, 44 in-lb).

3. Verify rack sliding force. Refer to PS-18, "CHECKING RACK SLIDING FORCE" .4. If rack sliding force is out of specification adjust rack sliding force again. 5. If rack sliding force cannot be adjusted within specification replace steering gear. Refer to PS-19,

"Removal and Installation" .

WGIA0030E

LGIA0018E

POWER STEERING OIL PUMP

PS-25

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POWER STEERING OIL PUMP PFP:49110

On-Vehicle Service EGS000W0

CHECKING HYDRAULIC SYSTEMBefore starting, check belt tension, driving pulley and tire pressure.1. Set Tool. Open shut-off valve. Then bleed air. Refer to PS-7,

"Bleeding Hydraulic System" .

2. Run engine at idle speed or 1,000 rpm.Make sure temperature of fluid in tank rises to 60 - 80°C (140 -176°F).WARNING:Warm up engine with shut-off valve fully opened. If engineis started with shut-off valve closed, fluid pressure in oilpump increases to maximum. This will raise oil temperatureabnormally.

3. Check pressure with steering wheel fully turned to left and right positions with engine idling at 1,000 rpm.CAUTION:Do not hold the steering wheel in a locked position for more than 15 seconds.

� If pressure reaches maximum operating pressure, system is OK.� If pressure increases above maximum operating pressure, check power steering pump flow

control valve. Refer to PS-33, "Power Steering" .4. If power steering pressure is below the maximum operating pressure, slowly close shut-off valve and

check pressure again.CAUTION:Do not close shut-off valve for more than 15 seconds.� If pressure increases to maximum operating pressure, gear is damaged. Refer to PS-19,

"Removal and Installation" .� If pressure remains below maximum operating pressure, pump is damaged. Refer to PS-25,

"Removal and Installation" .5. After checking hydraulic system, remove Tool and add fluid as necessary. Then completely bleed air out

of system. Refer to PS-7, "Bleeding Hydraulic System" .

Removal and Installation EGS000W1

REMOVAL1. Loosen adjustment screw and oil pump through bolt, then remove belt.2. Remove oil pump union bolts and hose.3. Remove oil pump bracket bolts.4. Remove oil pump.

INSTALLATIONInstallation is in the reverse order of removal.� Adjust belt tension. Refer to MA-11, "CHECKING DRIVE BELTS" .� Bleed air after installation. Refer to PS-7, "Bleeding Hydraulic System" .� Tighten oil pump bracket bolts to specifications. Refer to PS-26, "Disassembly and Assembly" .

Tool numbers : KV48103500 (J26357 and J26357-10), KV48102500 (J33914)

Oil pump maximum standard pressure : 8,000 - 8,800 kPa (82 - 90 kg/cm, 1,160 - 1,276 psi)

SST834-F

PS-26



Disassembly and Assembly EGS000W2

PRE-DISASSEMBLY INSPECTIONDisassemble the power steering oil pump only if the following items are found.� Oil leak from any point as shown� Deformed or damaged pulley� Poor performance

1. Pulley 2. Snap ring 3. Drive shaft

4. Oil seal 5. Suction pipe 6. O-ring

7. Spring 8. Flow control valve 9. O-ring

10. Connector 11. Washer 12. Joint

13. Connector bolt 14. Front housing 15. O-ring

16. O-ring 17. Front side plate 18. Vane

19. Rotor 20. Pin 21. Cam ring

22. Gasket 23. Rear cover 24. Oil pump bracket

25. Oil pump adjusting bracket

WGIA0032E

WGIA0033E


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DISASSEMBLYCAUTION:� Parts which can be disassembled are strictly limited. Never disassemble parts other than those

specified.� Disassemble in as clean a place as possible.� Clean your hands before disassembly.� Do not use rags; use nylon cloths or paper towels.� Follow the procedures and cautions in the Service Manual.� When disassembling and reassembling, do not let foreign matter enter or contact the parts.

1. Remove snap ring, then draw drive shaft out.CAUTION:Be careful not to drop drive shaft.

2. Remove oil seal.CAUTION:Be careful not to damage front housing.

3. Remove connector and flow control valve with spring.CAUTION:Be careful not to drop flow control valve.

4. Inspect all of the power steering oil pump components, andrepair or replace as necessary. Refer to PS-29, "Inspection AfterDisassembly" .

ASSEMBLYAssembly is in the reverse order of disassembly, noting the following instructions.� Make sure O-rings and oil seal are properly installed.� Always install new O-rings and oil seal.

SST010B

SST034A

SST036A

PS-28



� Be careful of oil seal direction.� Cam ring, rotor and vanes must be replaced as a set if neces-

sary.� Coat each part with Genuine NISSAN PSF, refer to GI-46,

"RECOMMENDED CHEMICAL PRODUCTS AND SEAL-ANTS" when assembling.

� Pay attention to the direction of rotor.

� When assembling vanes to rotor, rounded surfaces of vanesmust face cam ring side.

SST038A

WST031

SST843A


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� Insert pin 2 into pin groove 1 of front housing and front sideplate. Then install cam ring 3 as shown.

Inspection After Disassembly EGS000W3

� If pulley is cracked or deformed, replace it.� If an oil leak is found around pulley shaft oil seal, replace the seal.� If the pulley or pulley shaft is deformed or worn, replace it.

Cam ring : D1 is less than D2

WST035

PS-30

HYDRAULIC LINE


HYDRAULIC LINE PFP:49721

Removal and Installation EGS000W4

Refer to illustration for hydraulic line routing. Remove any components to access lines.CAUTION:Be careful to not kink or bend lines.

1. Power steering fluid reservoir 2. Power steering pressure switch 3. Power steering gear

4. Power steering oil pump 5. Low-pressure pipe connection 6. High-pressure pipe connection

7. Washer 8. Tube 9. Hose

D 3 - 8 mm (0.1 - 0.3 in) ⇐ Front

WGIA0167E

SERVICE DATA AND SPECIFICATIONS (SDS)

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SERVICE DATA AND SPECIFICATIONS (SDS) PFP:00100

General Specifications EGS000W5

Steering Wheel EGS000W6

Unit: mm (in)

Steering Column EGS000W7

Unit: mm (in)

Steering model Power steering

17 inch tire 18 inch tire

Steering gear type PR26AD

Steering overall gear ratio 16.1

Turns of steering wheel (Lock to lock) 2.6

Steering column typeStandard Collapsible, tilt, non-motorized telescoping

Optional Collapsible, tilt, motorized telescoping

Steering wheel axial end play 0 (0)

Steering wheel play 35 (1.38) or less

Movement of gear housing ±2 (±0.08) or less

Applied model All

Steering column length “L” 493 (19.4)

LGIA0020E

PS-32



Steering Gear and Linkage EGS000W8

Applied model All


Tie-rod outer ball joint

Swinging force at cotter pin hole: “A” N (kg-f, lb-f)

6.47 - 64.63 (0.66 - 6.59, 1.46 - 14.53)

Rotating torque: “B” N-m (kg-cm, in-lb) 0.29 - 2.94 (3.0 - 30.0, 2.6 - 26.0)

Axial end play: “C” mm (in) 0.4 (0.016) or less

Tie-rod inner ball jointSwinging force*: “A” N (kg-f, lb-f) 5.69 - 45.60 (0.58 - 4.65, 1.28 - 10.25)

Axial end play: “C” mm (in) 0.2 (0.008) or less

Tie-rod standard length “L” mm (in) 213.8 (8.417)

*: Measuring point [l: 172 mm (6.77 in)]

Rack sliding force N (kg-f, lb-f)Under normal operating oil pressure

Range within ±11.5 mm (±0.453 in) from the neutral position at rack speed of 3.5 mm (0.138 in)/s

Average force 235 - 314 (24 - 32, 55 - 71)

Maximum force deviation

98 (10, 22)

Except for the above range

Maximum sliding force

294 (30, 66)

Maximum force deviation

147 (15, 33)

Rack stroke “S” mm (in)225/55R17 65 (2.56)

245/45R18 66.5 (2.62)

SST468C

SGIA0167E

SST086BA


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Power Steering EGS000W9

Applied model All


Pump type F40

Steering wheel turning force(Measured at one full turn from the neutral position) N (kg-f, lb-f)

39 (4, 9) or less

Fluid capacity (Approximate) (US pt, Imp pt) 1.0 (2-1/8, 1-3/4)

Oil pump maximum pressure kPa (kg/cm2 , psi)8,000 - 8,800

(82 - 90, 1,160 - 1,276)

PS-34



g steering

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